Merge "simpleperf: Remove unused variable" into main am: 38619fcdb5

Original change: https://android-review.googlesource.com/c/platform/system/extras/+/2847994

Change-Id: I3da44c919fdcf8639513a6c71488ce414148ec4f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>